Learjet 35 captain climbed from assigned intermediate climb altitude due to distraction in monitoring the first officer's GPS programming. He noticed his error at the same time that the controller reminded them of their altitude assignment.

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Attributes
ACN	507749
Time
Date	200104
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : i90.tracon
State Reference	TX
Altitude	msl bound lower : 15000 msl bound upper : 15500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : i90.tracon artcc : mmid.artcc
Operator	general aviation : corporate
Make Model Name	Learjet 35
Operating Under FAR Part	Part 135
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Route In Use	departure : on vectors
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 3800 flight time type : 1500
ASRS Report	507749
Person 2
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance
Independent Detector	aircraft equipment : altitude alert other controllera other flight crewa
Resolutory Action	controller : issued advisory flight crew : returned to assigned altitude
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During climb while on a vector, approach cleared us to the lev VOR. Copilot was having trouble programming GPS. I looked down to help remedy his problem. This distraction me from flying aircraft. Altitude alerter went off as we passed 300 ft off our altitude. As I corrected for the deviation, the altitude went to 15500 ft. ATC informed us of the deviation as the alerter went off. We promptly corrected the deviation. There was no request to call ATC.

Original NASA ASRS Text

Title: LEARJET 35 CAPT CLBED FROM ASSIGNED INTERMEDIATE CLB ALT DUE TO DISTR IN MONITORING THE FO'S GPS PROGRAMMING. HE NOTICED HIS ERROR AT THE SAME TIME THAT THE CTLR REMINDED THEM OF THEIR ALT ASSIGNMENT.

Narrative: DURING CLB WHILE ON A VECTOR, APCH CLRED US TO THE LEV VOR. COPLT WAS HAVING TROUBLE PROGRAMMING GPS. I LOOKED DOWN TO HELP REMEDY HIS PROB. THIS DISTR ME FROM FLYING ACFT. ALT ALERTER WENT OFF AS WE PASSED 300 FT OFF OUR ALT. AS I CORRECTED FOR THE DEV, THE ALT WENT TO 15500 FT. ATC INFORMED US OF THE DEV AS THE ALERTER WENT OFF. WE PROMPTLY CORRECTED THE DEV. THERE WAS NO REQUEST TO CALL ATC.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.